Canyon, Colorado 2006-2007

2.8L L4 VIN 8 Auto 1

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2.8L L4 VIN 8 Auto

Trouble Code: C0240



N/A

Possible Causes:



C0240 A requested torque signal malfunction is only one possible cause for the PCM to lose the ability to perform traction control. DTC C0240 may set due to engine overheating, throttle actuator control failure, loss of ignition timing control by the PCM, etc. If DTC P1571 has not set, refer to Diagnostic System Check - Engine Controls in Engine Controls - 2.8L (LK5) or Diagnostic System Check - Engine Controls in Engine Controls - 3.5L (L52) to identify other possible causes of DTC C0240. P0856 Thoroughly inspect connections or circuitry that may cause an intermittent malfunction. Refer to Testing for Electrical Intermittents , Testing for Intermittent Conditions and Poor Connections , Connector Repairs and Wiring Repairs in Wiring Systems.
 

Trouble Code: C0244



Pulse Width Modulated (PWM) Delivered Torque

Possible Causes:



Thoroughly inspect connections or circuitry that may cause an intermittent malfunction. Refer to Testing for Electrical Intermittents , Testing for Intermittent and Poor Connections , Connector Repairs and Wiring Repairs in Wiring Systems.
 

Trouble Code: P0013



Exhaust Camshaft Position (CMP) Actuator Solenoid Control Circuit

Trouble Code: P0014



Exhaust Camshaft Position (CMP) System Performance

Possible Causes:



The scan tool cam phase control function increments the cam phaser in 10 percent increments. Each increment equates to 2.5 degrees of cam phasing. A cam phase angle of 15 degrees is achieved by commanding the phaser with the scan tool to 60 percent.
 
Inspect any engine mechanical work that has been performed recently. Verify that the engine timing has not been altered.
 
If this DTC is set along with any crankshaft position (CKP) or camshaft position (CMP) sensor DTCs, then both the CKP and CMP sensor DTCs should be diagnosed prior to performing this diagnostic. The PCM uses both inputs to determine the actual camshaft position.
 
Check the following items:

A loose CMP sensor causing a variance in the sensor signal
 
A loose CKP sensor causing a variance in the sensor signal
 
Excessive free play in the timing chain and gear assembly
 
Debris or contamination interfering with the CMP actuator solenoid valve assembly
 
Debris or contamination interfering with the CMP actuator assembly
 

Engine oil has a major impact upon the camshaft actuation system's responsiveness. Oil temperature, viscosity, and quality can slow and/or inhibit the phaser's ability to reach a desired phase angle.If an intermittent condition exists, refer to Intermittent Conditions .
 

Trouble Code: P0017



Crankshaft Position (CKP)-Exhaust Camshaft Position (CMP) Correlation

Possible Causes:

Important: The scan tool control of the CMP actuator solenoid is inhibited when DTC P0017 sets. The following conditions may cause this DTC to set:



An improperly torqued crankshaft balancer
 
A mis-built or mis-timed engine
 
A loose or missing crankshaft balancer bolt
 
The CMP actuator solenoid stuck open
 
The CMP actuator stuck in a position other than 0 degrees
 

Trouble Code: P0030



HO2S Heater Low Circuit Malfunction

Trouble Code: P0036



HO2S Heater Low Circuit Malfunction

Trouble Code: P0068



Excessive Air Flow Rate

Trouble Code: P0101



Mass Air Flow (MAF) System Performance

Possible Causes:



Inspect the harness of the MAF sensor to verify that it is not routed too close to the following components:

Any aftermarket accessories--Refer to Checking Aftermarket Accessories in Wiring Systems.
 
The secondary ignition wires or coils
 
Any solenoids
 
Any relays
 
Any motors
 

A wide open throttle acceleration from a stop should cause the MAF sensor parameter on the scan tool to increase rapidly. This increase should be from 3-6 g/s at idle to 140 g/s or more at the time of the 1-2 shift. If the increase is not observed, inspect for a restriction in the induction system or the exhaust system.A skewed or stuck engine coolant temperature (ECT) or IAT sensor will cause the calculated models to be inaccurate and may cause this DTC to run when it shouldn't.A steady or intermittent high resistance of 15 ohms or more on the ignition 1 voltage circuit will cause the MAF sensor values to be skewed high by up to 60 g/s, and may cause this DTC to set. A high resistance will cause a driveability concern before this DTC sets.The BARO that is used by the PCM to calculate the air flow models is initially based on the MAP sensor at key ON. When the engine is running, the PCM will continually update the BARO value near wide open throttle using the MAP sensor and a calculation. A skewed MAP sensor will cause the calculated mass air flow value to be inaccurate and may result in a no start condition. With the ignition ON and the engine OFF, the MAP Sensor parameter varies with the altitude. 101 kPa is the approximate value near sea level. This value will decrease by approximately 3 kPa for every 305 meters (1,000 feet) of altitude.A high resistance on the low reference circuit of the MAP sensor will skew the sensor value and may cause this DTC to set.If the condition is intermittent, refer to Inducing Intermittent Fault Conditions in Wiring Systems and Intermittent Conditions .
 

Trouble Code: P0102



MAF Sensor Low Frequency

Possible Causes:



Inspect for any contamination or debris on the sensing elements of the MAF sensor.
 
A wide open throttle (WOT) acceleration from a stop should cause the MAF sensor parameter on the scan tool to increase rapidly. This increase should be from 3-6 g/s at idle to 140 g/s or more at the time of the 1-2 shift. If the increase is not observed, inspect for a restriction in the induction system or the exhaust system.
 
A high resistance of 15 ohms or more on the ground circuit or the ignition 1 circuit of the MAF sensor may cause this DTC to set. A high resistance will cause a driveability concern before this DTC sets.
 
If the condition is intermittent, refer to Intermittent Conditions and Inducing Intermittent Fault Conditions in Wiring Systems.
 

Trouble Code: P0103



MAF Sensor High Frequency

Possible Causes:



Inspect the Air Induction System for any water intrusion. The water rapidly cools the hot sensing elements in the sensor causing a false indication of excessive air flow. Any water that reaches the MAF sensor will skew the sensor and may cause this DTC to set.
 
A poor connection at the fuse for the ignition 1 voltage circuit of the MAF sensor may cause this DTC to set.
 
If the condition is intermittent, refer to Intermittent Conditions and Inducing Intermittent Fault Conditions in Wiring Systems.
 

Trouble Code: P0106



MAP Sensor System Performance

Trouble Code: P0107



MAP Sensor Circuit Low Voltage

Trouble Code: P0108



MAP Sensor Circuit High Voltage

Trouble Code: P0112



IAT Sensor Circuit Low Voltage

Trouble Code: P0113



IAT Sensor Circuit High Voltage

Trouble Code: P0117



ECT Sensor Circuit Low Voltage

Trouble Code: P0118



ECT Sensor Circuit High Voltage

Trouble Code: P0120



TP Sensor 1 Voltage Malfunction

Trouble Code: P0121



TP Sensor Signal Range/Performance

Trouble Code: P0125



ECT Insufficient Time To Enter Closed Loop

Trouble Code: P0128



ECT Sensor Malfunction

Trouble Code: P0130



HO2S Showing Open Loop Status for Too Long

Trouble Code: P0131



HO2S Circuit Low Voltage

Trouble Code: P0132



HO2S Circuit High Voltage

Trouble Code: P0133



HO2S Slow Response

Trouble Code: P0134



HO2S Insufficient Activity

Trouble Code: P0135



HO2S Heater Performance

Trouble Code: P0136



HO2S Improper Transition During Passive Test

Trouble Code: P0137



HO2S Low Voltage

Trouble Code: P0138



HO2S High Voltage

Trouble Code: P0140



HO2S Bias Range Voltage

Trouble Code: P0141



HO2S Heater Current or Resistance Out of Range

Trouble Code: P0171



Fuel Trim Too Lean

Possible Causes:



The current cell can be observed using a scan tool.
 
The system will go lean if an injector is not providing enough fuel.
 
A lean condition could be present during high fuel demand due to a fuel pump not pumping enough fuel, plugged fuel filter or a restricted fuel line.
 
Insufficient fuel in the tank or low fuel pressure may cause this DTC to set. Refer to Fuel System Diagnosis .
 
Review the Failure Records with a scan tool. If an intermittent condition is suspected, refer to Intermittent Conditions .
 

Trouble Code: P0172



Fuel Trim Too Rich

Possible Causes:



The current cell can be observed using a scan tool.
 
A malfunctioning MAF sensor can cause a rich condition and set this DTC.
 
If an intermittent condition is suspected , refer to Intermittent Conditions .
 

Trouble Code: P0201



Fuel Injector 1 Incorrect Voltage

Possible Causes:



Performing the Fuel Injector Coil test may help isolate an intermittent condition. Refer to Fuel Injector Coil Test .
 
For an intermittent condition, refer to Intermittent Conditions .
 

Trouble Code: P0202



Fuel Injector 2 Incorrect Voltage

Possible Causes:



Performing the Fuel Injector Coil test may help isolate an intermittent condition. Refer to Fuel Injector Coil Test .
 
For an intermittent condition, refer to Intermittent Conditions .
 

Trouble Code: P0203



Fuel Injector 3 Incorrect Voltage

Possible Causes:



Performing the Fuel Injector Coil test may help isolate an intermittent condition. Refer to Fuel Injector Coil Test .
 
For an intermittent condition, refer to Intermittent Conditions .
 

Trouble Code: P0204



Fuel Injector 4 Incorrect Voltage

Possible Causes:



Performing the Fuel Injector Coil test may help isolate an intermittent condition. Refer to Fuel Injector Coil Test .
 
For an intermittent condition, refer to Intermittent Conditions .
 

Trouble Code: P0218



Transmission Fluid Overtemperature

Possible Causes:



The scan tool Trans. Fluid Temp. should rise steadily to a normal operating temperature, then stabilize.
 
Ask about the customer's driving habits, trailer towing, etc. Trailer towing should occur in D3.
 
Refer to Symptoms - Automatic Transmission .
 

 
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